CORPORATION OPERATOR S MANUAL HWH TOUCH PANEL-CONTROLLED 310 SERIES LEVELING SYSTEM

HWH R CORPORATION OPERATOR S MANUAL HWH TOUCH PANEL-CONTROLLED 310 SERIES LEVELING SYSTEM FEATURING: Touch Panel Control Hydraulic Leveling Straight-Acting Jacks Suspension Air Dump HWH HYDRAULIC LEVELING l ON STORE DUMP NOT IN PARK/ BRAKE OFF CAUTION! UNDERSTAND OPERATOR S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE. HWH CORPORATION (On I-80, Exit 267 South) 2096 Moscow Road Moscow, Iowa 52760 Ph: 800/321-3494 (or) 563/724-3396 Fax: 563/724-3408 www.hwh.com AP10044 - U.S. AP10268 - Europe ML10044/MP05.3004/THD-S 28AUG02

OPERATOR S MANUAL CAUTION! READ THE ENTIRE OPERATOR S MANUAL BEFORE OPERATING. BLOCK FRAME AND TIRES SECURELY BEFORE CRAWLING UNDER VEHICLE. DO NOT USE LEVELING JACKS OR AIR SUSPENSION TO SUPPORT VEHICLE WHILE UNDER VEHICLE OR CHANGING TIRES. VEHICLE MAY DROP AND OR MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH. KEEP ALL PEOPLE CLEAR OF THE VEHICLE WHILE LEVELING SYSTEM AND ROOM EXTENSIONS ARE BEING OPERATED. KICK-DOWN JACKS MAY ABRUPTLY SWING UP WHEN THE FOOT OF THE JACK CLEARS THE GROUND OR WHEN THE JACK REACHES FULL EXTENSION. NEVER PLACE HANDS OR OTHER PARTS OF THE BODY NEAR HYDRAULIC LEAKS. OIL MAY PENETRATE THE SKIN CAUSING INJURY OR DEATH. WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT, METAL CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES. IF THE VEHICLE IS EQUIPPED WITH KICK-DOWN STYLE JACKS, DO NOT OVER EXTEND THE REAR JACKS. IF THE WEIGHT OF THE VEHICLE IS REMOVED FROM ONE OR BOTH REAR WHEELS, THE VEHICLE MAY ROLL FORWARD OR BACKWARD OFF OF THE JACKS. NOTE: KEEP THE CONTROL VALVE LEVERS IN THE STORE POSITION WHEN JACKS ARE NOT IN USE. IMPORTANT: IF VEHICLE IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE OPERATING LEVELING SYSTEM. HOW TO OBTAIN WARRANTY SERVICE THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTY HWH CORPORATION strives to maintain the highest level of customer satisfaction. Therefore, if you discover a defect or problem, please do the following: FIRST: Notify the dealership where you purchased the vehicle or had the leveling system installed. Dealership management people are in the best position to resolve the problem quickly. If the dealer has difficulty solving the problem, he should immediately contact the Customer Service Department, at HWH CORPORATION. SECOND: If your dealer cannot or will not solve the problem, notify the Customer Service Department: HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760 (563) 724-3396 OR (800) 321-3494. Give your name and address, coach manufacturer and model year, date the coach was purchased, or the date of system installation, authorization of an independent service facility, to be defective part, either by appointment at the factory or by the CORPORATION will authorize repair or replacement of the determine whether or not your claim is valid. If it is, HWH HWH CORPORATION personnel will contact you to during business hours (8:00 a.m. till 5:00 p.m. c.s.t.). description of the problem, and where you can be reached determined by HWH CORPORATION. All warranty repairs must be performed by an independent service facility authorized by HWH CORPORATION, or at the HWH CORPORATION factory, unless prior written approval has been obtained from proper HWH CORPORATION personnel. MP15.0 30MAY01

CONTROL IDENTIFICATION "NOT IN PARK" LIGHT POWER ON LIGHT "ON" BUTTON STORE LIGHT "DUMP" BUTTON "STORE" BUTTON "OFF" BUTTON LEFT SIDE RETRACT BUTTON STORE ON HWH HYDRAULIC LEVELING DUMP OFF NOT IN PARK/ BRAKE CAUTION! UNDERSTAND OPERATOR S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE. LEFT EXTEND BUTTON FRONT RETRACT BUTTON FRONT EXTEND BUTTON WARNING LIGHTS (4-Red) RIGHT SIDE EXTEND BUTTON LEVELING LIGHTS (4-Yellow) RIGHT SIDE RETRACT BUTTON REAR EXTEND BUTTON REAR RETRACT BUTTON CONTROL BUTTONS "ON" BUTTON : This is the "ON" button for the leveling system. It provides control power to operate the electrical relay on the pump, the leveling lights and the 4 red warning lights. CONTROL FUNCTIONS POWER ON LIGHT : INDICATOR LIGHTS STORE INDICATOR LIGHT : system is in the store mode. This light indicates the system is on. This light will be on when the "OFF" BUTTON : This button turns off control power to the leveling system. "STORE" BUTTON : This button will retract all four jacks at the same time. EXTEND BUTTONS (UP ARROWS) : These buttons will extend their respective jack pairs to lift the vehicle. RETRACT BUTTONS (DOWN ARROWS) : These buttons will retract their respective jack pairs to lower the vehicle. "DUMP BUTTON" : This is a momentary button. Air will be exhausted from the vehicle suspension while this button is is being pushed. It will only work with the system on. NOT IN PARK/BRAKE LIGHT : This indicator light is on when the panel is on, but the hand/auto park brake is not set. LEVELING LIGHTS : If a yellow LEVELING LIGHT is on, that indicates a side or end of the vehicle is low. Extend the appropriate jack pairs to put out the yellow light. Only one yellow leveling light can be on at a time. The vehicle is level when all yellow lights are out. "WARNING LIGHTS" : A red "WARNING" light will be on when-ever the corresponding jack is extended 2 inches or more, provided the ignition switch is in the "ACC" or "ON" position and the system is on. Some vehicles are equipped with a dash mounted master "JACKS DOWN" light which will be on when one or more jacks are extended 2 or more inches, provided the ignition switch is "ON". "WARNING BUZZER" : A buzzer will sound if a jack is extended 2 inches or more and the ignition switch is in the "ON" position. MP25.17 19FEB01

OPERATING PROCEDURES SITE SELECTION Park with the front of the vehicle facing downhill if possible. Care must be taken not to raise the rear of the vehicle too high or the vehicle may roll forward or backward off the jacks. If parking on soft ground or asphalt paving, wood blocks or pads should be placed under the jacks. ROOM EXTENSION PROCEDURES IMPORTANT: If the vehicle is equipped with a room extension read this section carefully. If the vehicle is equipped with kick down jacks, the wheels MUST be blocked securely. DO NOT operate any room extension until the leveling and stabilizing procedure is complete. DO NOT retract the leveling system until all room extensions are retracted. NEVER operate the leveling system when any room extensions are extended. Refer to the vehicle owner s manual for proper operation of room extensions. IMPORTANT: Do not use a room extension support when the vehicle is supported by the leveling system. LEVELING PROCEDURE 1. Place gear selector in the parking position, apply park brake and block tires securely. NOTE: If the hand/auto park brake is not set, the "NOT IN PARK/BRAKE" light will come on when the "ON" button is pushed. The panel will turn on, but the system will not operate. 2. Place the ignition switch in the "ACC." position. The vehicle s engine must be off. Running the engine during or after leveling may inflate the air suspension, lifting the vehicle out of level. 3. Push the "ON" button on the touch panel. The POWER ON light will be lit. Place pads under the jacks, if necessary, at this time. 4. Push and hold the "DUMP" button until all air is exhausted from the vehicles suspension system. 5. A lit yellow LEVEL light indicates that the end, side, or corner is low. Push the EXTEND (up arrow) button to extend jack pairs according to a lit yellow light. ALWAYS LEVEL THE VEHICLE FROM SIDE TO SIDE, IF NEEDED, BEFORE LEVELING THE VEHICLE FROM FRONT TO REAR. Only one yellow LEVEL light can be on at one time. Extend jack pairs accordingly until all yellow lights are out. It may take several movements from side to front or side to rear to raise a low corner. If the ground is too uneven, the jack may not have enough stroke to level the vehicle. The vehicle may have to be moved. 6. After the vehicle is level, the jacks not used for leveling may be extended until they are firmly on the ground. This provides additional stability against wind and activity in the vehicle. Do this by pushing the front and/or rear EXTEND buttons as needed to extend any remaining jacks. Jacks extended to stabilize the vehicle should lift the vehicle at least 3/4 inch. Do not use the right or left EXTEND buttons. 7. Push the "OFF" button on the touch panel. 8. Turn the ignition switch off. MP35.68 19NOV07

OPERATING PROCEDURES RETRACT PROCEDURES EXTEND POSITION STORE/TRAVEL POSITION IMPORTANT: DO NOT interrupt power to the leveling system while it is in the STORE mode. DO NOT push the "OFF" button or turn the ignition key. The system must be allowed to completely finish the STORE mode. If any one red WARNING light does not go out the system will continue to store. Push the "OFF" button and have the system serviced. CAUTION: JACK POSITIONS THE OPERATOR MUST BE SURE THAT THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT ALL PEOPLE ARE CLEAR OF THE VEHICLE. NOTE:Retract room extensions before retracting the leveling system. 1. Start the coach engine to build air in the suspension system. Press the "I" button and store the jacks immediately. Do not move the vehicle until the vehicle is at the proper ride height for traveling. 2. Press the "STORE" button. As each jack retracts, its red WARNING light will go out. The system will automatically shut down approximately two minutes after the four individual red WARNING lights are out. CAUTION: DO NOT MOVE THE VEHICLE WHILE THE LEVELING JACKS ARE STILL IN CONTACT WITH THE GROUND OR IN THE EXTEND POSITION. THIS VEHICLE IS EQUIPPED WITH STRAIGHT-ACTING JACKS. MOVING THE VEHICLE WITH THE LEVELING JACKS EXTENDED CAN CAUSE SEVER DAMAGE TO THE JACKS AND OR THE VEHICLE AND CREATE A DRIVING HAZARD. DO NOT RELY SOLELY UPON WARNING LIGHTS. IT IS THE OPERATOR S RESPONSIBILITY TO CHECK THAT ALL JACKS ARE FULLY RETRACTED INTO THE STORE/TRAVEL POSITION AND THE VEHICLE IS AT THE PROPER RIDE HEIGHT FOR TRAVELING. 3. The vehicle can be moved as soon as the suspension air bags are inflated and the vehicle has returned to the proper travel height, providing the jacks are in the STORE/TRAVEL position. NOTE: If jacks cannot be retracted by the above procedure see MANUAL JACK RETRACTION Section. MANUAL JACK RETRACTION NOTE: Use the valve release "T" handles for retracting only if the "STORE" button on the control panel will not retract the jacks for travel. CAUTION: KEEP AWAY FROM THE WHEELS, DO NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE DISTANCE IN FRONT AND REAR OF VEHICLE. THE VEHICLE MAY DROP AND/OR MOVE FORWARD OR BACKWARD WITH- OUT WARNING AS THE VALVE RELEASE IS OPERATED. 1. Locate the 4 valve release "T" handles on the solenoid valves. The solenoid valves are located on the pump/valve assembly. 2. Allow clearance for vehicle to lower. 3. Retract the rear jacks by opening the two outer valves. Slowly turn the "T" handles counter clockwise. The handles may turn easily at first but as an internal spring is compressed, turning may become more difficult. The valves need only to be opened enough to retract the jack. 4. Retract the front jacks by opening the two center valves as described in Step 3. 5. Check that all four jacks are now retracted. 6. Close the valves by turning the release handles clockwise. Once the internal spring tension has been released, the handles will turn free for several turns. Once the "T" handles are snug, DO NOT tighten the handles past this point as internal damage may occur to the solenoid. 7. The system should now be repaired before using again. MP35.69 12MAR97

MAINTENANCE All maintenance should be done as part of the normal servicing of the coach. The oil level should be checked when the vehicle is first purchased and then once every two years. More often if there is an oil leak in the system. Any HWH hydraulic equipment, including jacks, slide-outs and steps should be fully retracted before checking fluid level. The oil reservoir is part of the pump / manifold assembly. The oil level is checked and filled through the breather cap. Clear any dirt away from the breather / filler cap before removing. The batteries should be in good condition and fully charged. All electrical connections, especially ground connections, should be clean, tight, free from corrosion and protected OIL LEVEL ELECTRICAL SYSTEM UNUSUAL CONDITIONS The oil level should be within one inch of the top of the reservoir. Most breather caps have a dipstick. Fluid level should be between the bottom of the dipstick and the center mark. NOTE: Overfilling the tank can cause leakage of oil through the breather cap. FLUID: HWH Specialty Hydraulic Oil is recommended. In an emergency Dexron automatic transmission fluid can be used. NOTE: Dexron automatic transmission fluid contains red dye and can cause staining should a leak occur. DO NOT USE brake fluid or hydraulic jack fluid. Use of these can damage seals. from corrosion. Weak batteries can cause erratic operation. Battery cable terminals, battery posts and connections should be kept clean and protected from corrosion. If driving conditions are unusually muddy, the jacks may become caked or clogged with mud. This condition may hamper the proper operation of the leveling system. This problem may be prevented or remedied by cleaning off each leveling jack if they become excessively muddy. In west or icy weather leveling jacks may become encrusted with ice. This may cause the leveling system to function improperly. To eliminate this problem, periodically check the leveling jacks and break loose any ice which may be causing improper operation. Do not move the vehicle while the leveling jacks are still in contact with the ground. Place the system in the store mode and then visually check to see if the leveling jacks have returned to the STORE/TRAVEL position. NOTE: All major components of the system can be replaced with rebuilt parts or can be sent to HWH CORPORATION to be rebuilt, when the system is out of warranty. LEVEL SENSING UNIT ADJUSTMENT Level the vehicle by placing a circular bubble level in the center of the freezer floor or location within the vehicle that is to be level. With the vehicle level, adjust the sensing unit until all yellow lights are off. This is done by drawing up the corresponding screw if the sensing unit is mounted below the surface as shown or backing out the corresponding screw if the sensing unit is mounted above the surface. Bump the sensing unit to see that it is settled tight against all three screw heads and still indicates that the unit is level. REAR THIS SIDE UP STICKER ON TOP LEVEL SENSING UNIT BELOW THE SURFACE MOUNTING SCREWS (3) MOUNTING SURFACE SPRINGS (3) ELECTRONIC LEVEL SENSING UNIT BELOW THE SURFACE MOUNTING FRONT THIS SIDE UP MOUNTING SURFACE SPRINGS (3) SCREWS (3) MP45.03 13NOV17

TROUBLE SHOOTING The following is a list of problems, and possible solutions, which might occur to the leveling system. NOTE: Only qualified technicians should install or repair leveling systems on vehicles. A knowledge of hydraulics, welding, the vehicle s suspension and electrical system, as well as an understanding of the leveling system s hydraulics and electronics is required. 1. JACK RETRACTS AFTER COACH IS LEVEL. A. Hose or jack has external leak. B. Fluid is leaking back to reservoir through solenoid valve. 2. LEVELING JACKS WILL NOT RETRACT COMPLETELY. A. Jack clogged with mud or ice. B. Main rod bent or scored. C. Springs weak or broken. D. Hydraulic line pinched. 3. IGNITION SWITCH ON, BUT NO POWER TO PUMP AND/ OR LIGHTS. A. Park brake not set. B. 12 volts from main power source not present. C. Faulty control box. D. Faulty wire or electrical connection. 5. CONTINUED E. Broken hydraulic line. F. Bad control box. G. Bad shuttle valve. 6. LEVELING LIGHTS (YELLOW) NOT FUNCTIONING PROPERLY. A. Yellow lights will not go out when vehicle is level: adjust sensing unit. B. If more than two yellow lights are on, replace the sensing unit. 7. WARNING LIGHTS (RED) NOT FUNCTIONING PROPERLY. A. Light will not come on: check for broken wire at warning switch on the jack. B. Lights will not go out bad warning switch or wires are shorted to ground. C. Check the touch panel. 4. PUMP WILL NOT ACTIVATE A. Bad touch panel. B. Bad control box. C. Pump relay not functioning. D. Pump not grounded. 5. HYDRAULIC PUMP ACTIVATES, BUT THE JACKS WILL NOT EXTEND. A. Bad solenoid valve. 8. AIR WILL NOT DUMP FROM SUSPENSION A. Bad control box. B. Bad touch panel. C. Air dump solenoid valve bad. 9. SUSPENSION WILL NOT INFLATE A. Bad control box. B. Air dump solenoid stuck open. B. Bad manifold pressure switch. C. Oil supply low in reservoir. D. Pump is not developing pressure. MP55.07 8SEP95

HYDRAULIC LINE CONNECTION DIAGRAM LEVELING SYSTEM FRONT NOTE: BEFORE OPERATING VALVE RELEASE "T" HANDLES, READ AND UNDERSTAND PROCEDURE FOR MANUAL JACK RETRACTION IN OPERATOR S INSTRUCTIONS. PUMP/MANIFOLD ASSEMBLY CHECK VALVE CAPS (4) VALVE RELEASE "T" HANDLES SHUTTLE VALVE LF MANIFOLD FITTING NOTE: SOME MANIFOLDS ARE EQUIPPED WITH VELOCITY VALVES RF VELOCITY VALVE LR RR MP65.0 18JUN01

HYDRAULIC SCHEMATIC 305/310/325 SERIES LEVELING SYSTEM WITH STRAIGHT-ACTING JACKS M RELIEF VALVE RETURN PRESSURE 12 VOLT D.C. HYDRAULIC POWER UNIT SOLENOID MANIFOLD ASSEMBLY PRESSURE/RETURN SHUTTLE VALVE 50 PSI SWITCH CHECK VALVE INNER SOL.VALVE LR SOL.VALVE SOL.VALVE SOL.VALVE LF RF RR CHECK VALVE OUTER LEFT FRONT RIGHT FRONT JACK CYLINDER LEFT REAR RIGHT REAR MP65.3005 07MAR03

AIR LINE CONNECTION DIAGRAM SUSPENSION AIR BAGS FROM WIRE HARNESS SEE ELECTRICAL DIAGRAM FOR CONNECTION AIR DUMP SOLENOID VALVES ARE ACTIVATED (OPENED) BY A +12 SIGNAL. B A B A 4 AIR DUMP SOLENOID VALVES AND 4 HEIGHT CONTROL VALVES ARE SHOWN. B A HEIGHT CONTROL VALVE B A THE AIR DUMP VALVE IS TO TEE INTO THE LINE BETWEEN THE AIR BAG AND THE HEIGHT CONTROL VALVE. THREE HEIGHT CONTROL VALVES ARE THE MOST COMMON ON AIR SUSPENSION SYSTEMS. 2, 3 OR 4 CONTROL VALVES MAY BE USED. USE ONLY DOT APPROVED FITTINGS AND TUBING. 3/8" O.D. TUBE NEW LINE EXISTING LINE SUSPENSION AIR BAGS MP75.2 15MAY97

A A B TO PARK BRAKE SWITCH (LABELED) - 9000 (YELLOW) 1000 TO BRAKE LIGHT ON DASH (LABELED) - 9001 FROM +12 ACC. FUSED 15 AMP MAX - (BROWN) 6120 LF (BLUE) 9000 B A 310 LEVELING SYSTEM ELECTRICAL CONNECTION DIAGRAM WITH SUSPENSION AIR DUMP HYDRAULIC MANIFOLD HARNESS HYDRAULIC MANIFOLD ELECTRICAL CONNECTION DIAGRAM (WHITE) 6235 #10 WIRE TO GROUND STUD - (WHITE) 6230 TO JACK WARNING SWITCH SEE CONTROL BOX ELECTRICAL CONNECTION (GRAY) 9300 (WHITE) 6230 A +12 - (PURPLE) 6121 SEE MASTER WARNING LIGHT/BUZZER CONNECTION DIAGRAM AIR DUMP HARNESS B TOUCH PANEL CABLE ASSEMBLY SEE TOUCH PANEL CONNECTION DIAGRAM TOUCH PANEL CONTROL - (BROWN) 7699 TO JACK WARNING SWITCH (RED) 2000 B A RF (WHITE) 6235 MAKE ALL GROUNDING CONNECTIONS BEFORE APPLYING POWER TO BOX. GROUNDING ELECTRICAL CONNECTION DIAGRAM LEVEL SENSING UNIT OTHER AIR DUMP VALVE ARRANGEMENTS ARE POSSIBLE PUMP RELAY ELECTRICAL CONNECTION DIAGRAM (WHITE) 6230 (WHITE) 6230 (GRAY) 9300 A B WARNING SWITCH HARNESS (GRAY) 9300 NOTE: SEE SUSPENSION AIR DUMP DIAGRAM FOR ADDITIONAL EXPLANATION OF AIR DUMP VALVE CONNECTIONS B AIR DUMP VALVE B (GRAY) 9300 TEE ADAPTOR (WHITE) 6230 NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. A LR (WHITE) 6235 A (GREEN) 4000 A B TO JACK WARNING SWITCH (WHITE) 6235 B (BLACK) 3000 RR MP85.3016 02FEB99

CONNECTION DIAGRAM 310 SERIES LEVELING SYSTEM TOUCH PANEL WITH SUSPENSION AIR DUMP HWH HYDRAULIC LEVELING ON STORE DUMP NOT IN PARK/ BRAKE OFF CAUTION! UNDERSTAND OPERATOR S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE. 8-DUMP 7-GROUND 6-PARK BRAKE 5-STORE RETURN 4-FUSED ACCESSORY 3-SWITCHED ACCESSORY (TO CONTROL BOX) 2-FUSED ACCESSORY (TO CONTROL BOX) 1-JACK DOWN WARNING SENSOR STORE-9 PUMP-10 LEFT FRONT-11 LEFT REAR-12 RIGHT REAR-13 KEY N.C.-14 RIGHT FRONT-15 TOUCH PANEL CABLE CONNECTIONS RED-REAR-1 GREEN-RIGHT SIDE-2 BLACK-FRONT-3 YELLOW-LEFT SIDE-4 WHITE-COMMON-5 LEVEL SENSING UNIT INPUTS 9-BLANK 8-CONTROL - (BROWN) 7699 7-+12 - (PURPLE) 6121 6-BLANK MASTER WARNING INDICATOR PIGTAIL NOTE: ALL WIRE CONNECTIONS WILL POINT AWAY FROM THE PANEL WHEN PLUGGED IN. 1-LEFT REAR - (GREEN) 4000 2-RIGHT REAR - (BLACK) 3000 3-RIGHT FRONT - (RED) 2000 4-LEFT FRONT - (YELLOW) 1000 5-COMMON - (WHITE) 6235 WARNING SWITCH INPUTS NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. MP85.3017 21OCT99

ELECTRICAL CONNECTION DIAGRAM CONTROL BOX 310 SERIES LEVELING SYSTEM WITH SUSPENSION AIR DUMP NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. LEFT REAR SOLENOID VALVE - (BROWN) 4400 RIGHT REAR SOLENOID VALVE - (ORANGE) 3400 PRESSURE SWITCH - (BLACK) 8100 RIGHT REAR FUSE #10 GROUND WIRE - (WHITE) 6230 (TWO WHITE WIRES IN THE RING TER- MINAL WHEN AIR DUMP IS USED) 10 AMP 10 AMP 10 AMP 7.5 AMP 10 AMP 5 AMP 5 AMP RIGHT FRONT SOLENOID VALVE - (GREEN) 2400 LEFT FRONT SOLENOID VALVE - (BLUE) 1400 DUMP - 9300 LEFT REAR FUSE PUMP - (GRAY) 8600 #10 POWER WIRE - (BLACK) 6100 PARK BRAKE - (BLUE) 9000 LEFT FRONT FUSE RIGHT FRONT FUSE DUMP FUSE FROM +12 ACC. - (BROWN) 6120 5 - STORE RETURN 4 - FUSED ACCESSORY (TO TOUCH PANEL) 3 - SWITCHED ACCESSORY (FROM TOUCH PANEL) 2 - FUSED ACCESSORY (FROM TOUCH PANEL) 1 - JACK DOWN WARNING SWITCH PUMP FUSE ACC. FUSE JACK INTERRUPT FOR ROOM EXTENSION (IF NEEDED) 6-PARK BRAKE 7-GROUND 8-DUMP 9-STORE 10-PUMP 11-LEFT FRONT 12-LEFT REAR 13-RIGHT REAR 14-BLANK 15-RIGHT FRONT PART NUMBER AND AND SERIAL NUMBER TOUCH PANEL CABLE INPUT 15 PIN ROOM EXTENSION PUMP CONTROL (ONLY USED WITH HWH ROOM EXTENSION) TOUCH PANEL CABLE SLIDE OUT SWITCH CONNECTION LABEL MP85.3024 06APR99

310 LEVELING SYSTEM HYDRAULIC MANIFOLD-PUMP RELAY ELECTRICAL CONNECTION DIAGRAM MANIFOLD DIAGRAM SEE GROUNDING INSTRUCTION DIAGRAM RR RF LF LR DO NOT REVERSE WIRE COLORS TO A & B ON PACKARD CONNECTORS PRESSURE SWITCH (50 PSI) NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. B A B A B A B A PUMP/MANIFOLD HARNESS (ORANGE) 3400 (WHITE) 6240 (GREEN) 2400 (WHITE) 6241 (BLUE) 1400 (WHITE) 6240 (BROWN) 4400 (WHITE) 6241 (BLACK) 8100 VIEW FROM TANK END PUMP RELAY PUMP MUST BE MOUNTED SOLIDLY TO FRAME. SOME PUMPS HAVE A GROUND CABLE THAT IS TO BE ATTACHED TO THE GROUND STUD. BATTERY + - GROUND * FUSE NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. (WHITE) 6231 (GRAY) 8600 (BLACK) 6100 40 AMP FUSE NOTE : IF THE PUMP BRACKET IS WELDED TO THE FRAME, USE THE GROUND STUD TO ATTACH THE THE PUMP TO THE BRACKET. IF THE PUMP BRACKET IS BOLTED TO THE FRAME, USE THE GROUND STUD TO ATTACH THE BRACKET TO THE FRAME. * FUSE MAY BE REQUIRED - CHECK APPLICABLE CODE PUMP/MANIFOLD HARNESS MP85.3032 05FEB99

ELECTRICAL CONNECTION DIAGRAM 310/325 LEVELING SYSTEM POWER UNIT/HARNESS GROUNDING INSTRUCTIONS WELDED PUMP MOUNT USE GROUNDING STUD AND 3/8" INTERNAL STAR LOCKWASHERS AS SHOWN. IMPORTANT: STAR LOCKWASHER MUST BE USED BETWEEN GROUNDING SURFACE AND WIRE TERMINALS MANIFOLD GROUND SEE HYDRAULIC MANIFOLD/ PUMP RELAY ELECTRICAL CONNECTION DIAGRAM PUMP MOUNTING CHANNEL - + GROUND CABLE STRAP (NOT USED ON SOME PUMPS) PUMP MOUNTING POSITIONS. PUMP/MANIFOLD HARNESS GROUP OF WHITE WIRES 6 INCHES FROM END OF LOOM TO BE GROUNDED TO STUD. NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. 3/8-16 NUT GROUNDING STUD 3/8" INT. STAR LOCKWASHER (3 USED) (WHITE) 6233 (WHITE) 6240 (WHITE) 6241 (WHITE) 6230 (WHITE) 6231 PUMP MOUNTED REMOTE FROM FRAME USE GROUNDING STUD AND 3/8" INTERNAL STAR LOCKWASHERS AS SHOWN. IMPORTANT: STAR LOCKWASHER MUST BE USED BETWEEN GROUNDING SURFACE AND WIRE TERMINALS. NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. 3/8" INT. STAR LOCKWASHER (4 USED) 3/8-16 NUT (2 USED) - + PUMP MANIFOLD HARNESS (WHITE) 6240 (WHITE) 6241 (WHITE) 6231 (WHITE) 6230 GROUND CABLE STRAP (NOT USED ON SOME PUMPS) GROUND STUD FRAME RAIL MANIFOLD GROUND SEE HYDRAULIC MANIFOLD/ PUMP RELAY ELECTRICAL CONNECTION DIAGRAM 6233 GROUP OF WHITE WIRES 6 INCHES FROM END OF LOOM TO BE GROUNDED TO STUD. MP85.3043 12MAY03

+ 5-15 AMP FUSE CONNECT THIS END TO IGNITION "ON" POWER SEE TOUCH PANEL CONNECTION DIAGRAM BUZZER _ MASTER LIGHT/BUZZER CONNECTION DIAGRAM MANUAL LEVELING SYSTEMS 310 SERIES A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS STRAIGHT-ACTING JACKS A WARNING BUZZER MUST BE USED. WHEN ONLY A RED MASTER WARNING LIGHT IS USED THE +12 POWER FOR THE LIGHT COMES THROUGH THE TOUCH PANEL. (SEE FIGURE 1 BELOW.) WHEN BOTH A RED LIGHT AND WARNING BUZZER ARE USED THE +12 POWER FOR BOTH INDICATORS IS SUPPLIED BY THE IGNITION SWITCH. THE POWER MUST COME FROM THE "ON" SIDE OF THE IGNITION SWITCH, NOT THE "ACC" SIDE. (SEE FIGURE 2 BELOW.) NOTE: BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE CONTROL BOX, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING. THE NEGATIVE SIGNAL FOR THE WARNING INDICATORS MUST ALWAYS COME FROM THE TOUCH PANEL. CAUTION: THE PURPLE WIRE IN THE MASTER WARNING LIGHT PIGTAIL IS HOT WHENEVER THE IGNITION IS "ON" OR IN "ACC". THE PURPLE WIRE MUST BE REMOVED FROM THE PIGTAIL WHEN USING DIRECT IGNITION VOLTAGE FOR THE MASTER WARNING INDICATORS. WARNING LIGHT WIRES ARE PLUGGED DIRECTLY INTO THE TOUCH PANEL + - +12 - (PURPLE) 6121 CONTROL WIRE - (BROWN) 7699 FIGURE 1 SEE TOUCH PANEL CONNECTION DIAGRAM NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. 12V PIGTAIL W/DIODE AND IN-LINE FUSE HOLDER - (PURPLE) 6121 NOTE: DO NOT USE PURPLE WIRE. REMOVE PURPLE WIRE FROM MTA CONNECTOR JACKS DOWN LIGHT INCLUDED IN HARDWARE KIT NOTE: THE (4) DIGIT WIRE NUMBER SUPERSEDES ANY AND ALL WIRE COLORS. PIGTAIL PROVIDED - (BROWN) 7699 FIGURE 2 SPLICE BROWN WIRE FROM HWH LIGHT PLATE TO BROWN PIGTAIL WITH BUTT CONNECTOR MP85.3053 10OCT02